You Add a Weak Acid Solution to a Sample of Foraminifera

question 43

Multiple Choice

You add a weak acid solution to a sample of foraminifera shells, and they bubble and fizz. This tells you that the external shells of foraminiferans are composed of:

• A) silica.
• B) protein.
• C) cellulose.
• D) calcium carbonate.
• E) starch.

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Definitions:

Insulin

Insulin is a hormone produced by the pancreas that regulates blood glucose levels by promoting the absorption of glucose into liver, fat, and skeletal muscle cells.

Glucose

A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.

Nutrients

Substances obtained from food that are essential for maintaining bodily functions and growth, including vitamins, minerals, carbohydrates, proteins, and fats.

Testosterone

A steroid hormone that plays a key role in the development of male reproductive tissues, as well as promoting secondary sexual characteristics and affecting moods.